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On Wed, Aug 10, 2022 at 08:36:33AM +0200, Martin Holst Swende wrote:
> 
> On 8/10/22 05:10, Demi Marie Obenour wrote:
> > On Tue, Aug 09, 2022 at 08:11:35PM +0200, Martin Holst Swende wrote:
> > > Some follow-up. I tested also with a Fedora LiveCD, results are on the
> > gist 
> > (here:https://gist.github.com/holiman/83c76e4cd98d087719773486a77d9112#file-fedora-live-txt
> > > ) .
> > 
> > > The Fedora livecd worked flawlessly, both wifi-wise and graphics-wise.
> > It
> > > was a fedora 36 -- whereas dom0 is still on Fedora32.
> > 
> > > Is it in any way possible to try out some experimental repo where dom0
> > is
> > > more recent?
> > 
> > No, but I would like to know if your problems go away with
> > kernel-latest.  If they do not, then this means that either Xen does not
> > interact well with Linux’s graphics drivers, or that the Mesa version is
> > too old for your hardware.
> 
> 
> Unfortunately, they do not. I did that as the first thing after getting wifi
> to work, so the version 5.18.9-1 in the HCL, is kernel-latest.
> 
> Happy to try out any suggestion/experiment.

1. Does i915.enable_psr2_sel_fetch=0 help?
2. What X11 driver is Xorg using?  If it is using Intel, does
   modesetting help?  If it is using modesetting, does Intel help?
3. Does HVM sys-gui-gpu work?  What about PV (not PVH!) sys-gui-gpu?

If PV sys-gui-gpu with a dom0-provided kernel works, then the problem is
almost certainly old dom0 userspace: either an old X server, old Mesa,
or both.  If you could build modern Mesa and/or X11 for dom0 and try
again, that would be awesome.
- -- 
Sincerely,
Demi Marie Obenour (she/her/hers)
Invisible Things Lab
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